Daniel Defense M4A1 RIS II Complete AR-15 Upper Receiver - 5.56 - 14.5" P/W - FDE

The Daniel Defense M4A1 RIS II Complete AR-15 Upper Receiver in Flat Dark Earth pairs a 14.5" cold hammer forged M4-profile barrel with the M4A1 FSP Rail Interface System (RIS II), pinned and welded to a legal 16" overall length with a Daniel Defense extended flash suppressor.

Features:

• 14.5" cold hammer forged M4-profile barrel, chrome lined, 1:7 twist, HP/MPI tested
• Mid-length gas system with pinned low-profile gas block
• Daniel Defense extended flash suppressor, pinned and welded to 16" legal length
• M4A1 FSP RIS II handguard, 12.25" overall length, CNC machined 6061-T6 aluminum
• M16-profile bolt carrier group, chrome lined, properly staked gas key
• GRIP-N-RIP charging handle
• FDE hard coat anodized finish
• Bolt carrier group and charging handle included

The GRIP-N-RIP charging handle is built to work equally well for left- and right-handed shooters, and the M16-profile bolt carrier group's properly staked gas key adds reliability margin beyond a standard semi-auto BCG. The pinned low-profile gas block and mid-length direct impingement system keep cycling consistent shot to shot.

This RIS II configuration also includes color-matching Daniel Defense rail panels, so there's nothing extra to source before the handguard is ready to grip.

Daniel Defense has supplied duty-grade AR-15 rifles and components to U.S. special operations units, law enforcement, and civilian shooters for over two decades, and this complete upper carries that same mil-spec pedigree.